Making a Seer

[Bad Wolf]

What would people say is the best class for making this type of character?

[Stealth Marmot]

What would people say is the best class for making this type of character?

There is literally a Divine Oracle prestige class in Complete Divine.

The class allows for divine or arcane characters, so you could have a Diviner Wizard, or (more appropriately) a Cleric with an appropriate deity, or possibly best of all, a Favored Soul from Complete Divine with an appropriate deity. The Favored Soul is best because it allows their power to be divinely inspired.

Is this a PC or NPC?

[Bad Wolf]

There is literally a Divine Oracle prestige class in Complete Divine.

The class allows for divine or arcane characters, so you could have a Diviner Wizard, or (more appropriately) a Cleric with an appropriate deity, or possibly best of all, a Favored Soul from Complete Divine with an appropriate deity. The Favored Soul is best because it allows their power to be divinely inspired.

Is this a PC or NPC?

PC. And also I was looking for more of a base class.

[Stealth Marmot]

PC. And also I was looking for more of a base class.

Pathfinder has an Oracle class, but as far as I know there is no base Oracle class in 3.x D&D.

When you say Seer, what do you want the character to do? What do you want the nature of their abilities to be?

[Bad Wolf]

Pathfinder has an Oracle class, but as far as I know there is no base Oracle class in 3.x D&D.

When you say Seer, what do you want the character to do? What do you want the nature of their abilities to be?

Scrying, seeing the future, things like that.

[Inevitability]

Scrying, seeing the future, things like that.

Diviner wizard? Cleric with any of the Knowledge, Oracle or Truth domains?

[Stealth Marmot]

What Inevitability said is the most mechanically effective methods of making the character.

A slight variant could be a simple Druid. Druids get the ability to scry and you have the fluff of someone normally being a hermit and more closely tied to nature.

[Telonius]

Psion focused on Clairsentience is (also) literally called a "Seer."

[Karl Aegis]

Seconding the class named "Seer".

[Bad Wolf]

Psion focused on Clairsentience is (also) literally called a "Seer."

Oh yeah, almost forgot about that. Is that considered any good?

[Beneath]

Psionics is a mixed bag. You can get a good variety of what you want as psi powers (possibly easier than spells? a lot of the good divinations were split up between the wizard and cleric lists, but there's no psionic version of Commune), but it's very easy to make a psionic character completely ineffective or play them in an ineffective way if you don't know what you're doing (burning through all your power points on augmented powers too early and not having any later, or conversely not augmenting when you need to).

This is also DM-dependent; ultimately anything you do for a character to get visions of the future (or for that matter, scrying) is going to go through you asking them, so it'd be a good idea to sell the DM on this character concept so they'll be inclined to help you shine, rather than just showing up with it.

Short descriptions of what you're going for can't get you good, detailed advice on a build. What's this seer trying to do (personal goals, what do you know about the campaign)? Are you attached to any particular ideas for the source of their power?

[Telonius]

Well, Psion in general is in Tier 2. I'm not sure what the general consensus on the various disciplines is. Egoist and Shaper are probably the top two, because of Metamorphosis and Astral Constructs, but Seer is still pretty powerful.

[sleepyphoenixx]

Oh yeah, almost forgot about that. Is that considered any good?

Seer's actually have a couple advantages over diviners (or spellcasters using divinations in general), like the ability to manifest powers through Remote Viewing or access to effects that magic simply doesn't have or only has in weaker forms like Sensitivity to Psychic Impressions, Object Reading, Hypercognition and the awesome Metafaculty.

They're also still full psions with access to all the psionic tricks, so it's not like you're useless when you're not gathering information. A spellcaster really focusing on divinations generally sacrifices more imo.
Another benefit i'm very fond of is the ability to channel powers through your psicrystal (up to 1 mile away), which is something familiars just can't do.

[Inevitability]

Oh yeah, almost forgot about that. Is that considered any good?

Seers are pretty good, having full manifesting and all.

I've got a seer build in my sig that may or may not be what you're looking for. Its main tricks don't come online until higher levels, though custom items may greatly reduce that.

[Lord Haart]

Worth noting that Spontaneous Divination ACF for Wizard lets it spontaneously cast any divination spell. ANY divination school.

Even if your DM nerfs it to "any divination school from the sor/wiz list that your character knows", it drops down to being "merely" stupid good; the wizard list is big and bloated by all the supplements, and the versatility is invaluable in any campaign that has more complexity than "we kick the door in, we roll initiative".

[Gusmo]

Metafaculty (http://www.d20srd.org/srd/psionic/powers/metafaculty.htm) is the most powerful non-epic divination effect in the game, defeating even mind blank and wish explicitly. It's exclusive to psions who become seers. Unless you're being abusive, in which case all psions can know all powers thanks to psychic chirurgery (http://www.d20srd.org/srd/psionic/powers/psychicChirurgery.htm). If you're being super abusive, the most optimal thing to do is probably to utilize true mind switch (http://www.d20srd.org/srd/psionic/powers/mindSwitchTrue.htm) to become a beholder, then abuse your way into a build like psion10/beholder mage1/cerebremancer9. If you want to be more abusive than that, become an ilithid savant.

[sleepyphoenixx]

Worth noting that Spontaneous Divination ACF for Wizard lets it spontaneously cast any divination spell. ANY divination school.

Even if your DM nerfs it to "any divination school from the sor/wiz list that your character knows", it drops down to being "merely" stupid good; the wizard list is big and bloated by all the supplements, and the versatility is invaluable in any campaign that has more complexity than "we kick the door in, we roll initiative".

It's not actually a nerf, it's in the errata.
Still good though, as you said. To the point where almost every wizard who doesn't go into Master Specialist early takes it.